Cutlass Supreme V6-3100 3.1L MFI VIN M (1994)
1.
With the rear of the sunroof module supported by the loosely installed rear support bracket bolts, remove the nut that secures the middle of the
module to the roof on each side. See Figures 1 & 4.
2.
Once the middle nut on each side is removed, the tension on the roof sheet metal should be relieved and the overcrowning condition corrected. To
correct the dimpling at the rear corners of the sunroof opening, it may be necessary to push the inside of the roof upwards at the sunroof module
middle mounting stud location on each side.
3.
With the middle nut on each side still removed, tighten the rear support bracket bolt on each side to 10 N.m (89 lb. in.).
4.
Verify that the rubber dust seal is making light contact with the roof sheet metal.
5.
To determine the number of shims (washers or wheel alignment shims) required to correct the sunroof module fit, measure the gap between the
sunroof module and the roof at the middle mounting stud location on each side. See Figure 4.
Important:
Only add shims to the middle mounting stud location on each side. Do not add shims to the other mounting bolt locations at the front or rear of the
sunroof module.
6.
Add shims as necessary between the sunroof module and the roof at the middle mounting studs by first "loosening" the front sunroof module
attaching bolts on each side and then, while supporting the rear of the module, remove the bolts from both rear support brackets. Carefully lower
the rear of the module as far as necessary in order to add shims. It is not necessary to completely remove the module when adding shims. See
Figure 4.
Important:
Not properly shimming the module at the middle location on each side may cause the exterior roof sheet metal to overcrown and dimple when the
middle retaining nuts are installed and tightened.
7.
With the shims in place, raise the sunroof module into position and install both retaining nuts and the rear support bolts. First tighten both nuts and
then the front and rear bolts to 10 N.m (89 lb. in.).
Sunroof Glass to Roof Opening Fit
1.
Using a pencil or straight edge as shown in Figure 2, verify that the glass is flush to 1 mm (0.04 in.) above the roof sheet metal across the complete
rear of the glass.
2.
Verify that the front edge of the glass is flush to 1 mm (0.04 in.) below the roof sheet metal.